module KeyStore

# File lib/key_store.rb, line 39
def delete!(name)
  store.transaction { |f| f.delete(name.to_s) }
end

# File lib/key_store.rb, line 31
def exists?(name)
  !!(store.transaction { |f| f.root?(name.to_s) })
end

# File lib/key_store.rb, line 35
def find(name)
  exists?(name) ? KeyStore::Key.new(name) : nil
end

# File lib/key_store.rb, line 13
def set_file_path(value)
  @file_path = value
end

# File lib/key_store.rb, line 17
def store
  if @store.nil? || modified?
    Mutex.new.synchronize do
      @store = begin
        raise "file_path not set" if file_path.nil?
        FileUtils.touch(file_path) unless File.exists?(file_path)
        self.mtime = File.mtime(file_path)
        YAML::Store.new(file_path, true)
      end
    end
  end
  @store
end

# File lib/key_store.rb, line 47
def modified?
  return true if mtime.nil? || !File.exists?(file_path)
  File.mtime(file_path) != mtime
end